CN109560116A - Foldable OLED display panel - Google Patents
Foldable OLED display panel Download PDFInfo
- Publication number
- CN109560116A CN109560116A CN201811561838.2A CN201811561838A CN109560116A CN 109560116 A CN109560116 A CN 109560116A CN 201811561838 A CN201811561838 A CN 201811561838A CN 109560116 A CN109560116 A CN 109560116A
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- spacer
- display panel
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- bending region
- pixel
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- 125000006850 spacer group Chemical group 0.000 claims abstract description 73
- 238000005452 bending Methods 0.000 claims abstract description 68
- 230000002269 spontaneous effect Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 6
- 229920002120 photoresistant polymer Polymers 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 239000010408 film Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 239000000758 substrate Substances 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000001259 photo etching Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/311—Flexible OLED
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A kind of foldable OLED display panel, the display panel include bending region and non-bending region, and include: multiple sub-pixels, are formed in bending region and non-bending region, and all or part of sub-pixel of multiple sub-pixels has spontaneous light characteristic；And first spacer, it supports to provide and gap is formed, the first spacer is set to bending region, and is in net distribution, around multiple sub-pixels.The display panel can enhance the whole capability that the sub-pixel in bending region meets with stresses in the process of bending, it is ensured that the reliability of display panel.
Description
Technical field
This application involves a kind of display technology, in particular to a kind of foldable Organic Light Emitting Diode (organic light
Emitting diode, OLED) display panel.
Background technique
Flexible display screen has frivolous, small in size, power consumption by feat of the characteristics such as being arbitrarily bent, fold and stretch
The high advantage of low and portability energy, has the prospect of extensive use.For field of display technology, either it is foldable still
It is stretchable, or any bending, flexible display technologies are all field technology innovations.
In current dynamic Folding display product, bent-axis is fixed.As shown in Figure 1A, the bending of the display product of doubling
Axis A1 is the intermediate region of display screen.As shown in Figure 1B, three foldings show that bent-axis B1, B2 of product is respectively display screen
At 1/3 and 2/3.Crooked process radius is about in 5mm or 3mm.
Fig. 2 shows a kind of schematic diagram of existing foldable OLED display panel.As shown in Fig. 2, existing foldable
It include red sub-pixel 101, blue subpixels 102 and green sub-pixels 103 in OLED display panel.These sub-pixels 101,
Spacer 110 is distributed between 102 and 103, spacer 110 is to the support between providing film layer, so that forming gap between film layer.
Bending in existing foldable OLED display panel, in display area or active area (active area, AA)
Thin film transistor (TFT) (thin film transistor, the TFT) structure and film layer structure substantially one in region and non-bending region
Sample.The spacer 110 in bending region and non-bending region is small rectangular in display area, is distributed by identical even density
In display area.
But display panel is in practical folding process, bend each film layer of TFT in region to bear from external pull and
The effect of pressure is more much greater than non-bending region.After repeatedly folding, the sub-pixel stress distribution bent in region is uneven,
So that the display device in bending region is easy deterioration, and influence the reliability of display panel.
Summary of the invention
The application's is designed to provide a kind of foldable OLED display panel, to solve existing foldable display panel
The non-uniform problem of sub-pixel stress distribution in middle bending region.
To achieve the above object, on the one hand the application provides a kind of foldable OLED display panel, the display panel packet
Bending region and non-bending region are included, when the display panel folds, the bending region forms curved surface, and the display panel is not
When folding, the bending region and the non-bending region are plane, and the display panel includes:
Multiple sub-pixels are formed in the bending region and the non-bending region, the whole of the multiple sub-pixel
Or part sub-pixel has spontaneous light characteristic；And
First spacer, to provide support and form gap, first spacer is set to the bending region,
And be in net distribution, around the multiple sub-pixel.
In the embodiment of the present application, first spacer loops are around each of bending region sub-pixel.
In the embodiment of the present application, the multiple sub-pixel includes red sub-pixel, blue subpixels and green sub-pixels, institute
State the first spacer be set between the red sub-pixel and the blue subpixels, the red sub-pixel and it is described green son
Between pixel and between the blue subpixels and the green sub-pixels.
In the embodiment of the present application, first spacer in the straight-line segment of net distribution by constituting.
In the embodiment of the present application, first spacer in the warpage molded line section of net distribution by constituting.
In the embodiment of the present application, the display panel further include:
Multiple second spacers, to provide support and form gap, the multiple second spacer is set to described
Non- bending region, the sub-pixel of the corresponding predetermined number of each of the multiple second spacer.
In the embodiment of the present application, first spacer is identical with the material of the multiple second spacer.
In the embodiment of the present application, first spacer includes photosensitive type spacer.
In the embodiment of the present application, the material of first spacer is organic photoresist.
On the other hand the application provides a kind of foldable OLED display panel, the display panel includes bending region and non-
Region is bent, when the display panel folds, formation curved surface in the bending region is described curved when the display panel is not folded
Folding area domain and the non-bending region are plane, comprising:
Multiple sub-pixels are formed in the bending region and the non-bending region, the whole of the multiple sub-pixel
Or part sub-pixel has spontaneous light characteristic；
First spacer, to provide support and form gap, first spacer is set to the bending region；
And
Multiple second spacers, to provide support and form gap, the multiple second spacer is set to described
Non- bending region,
The wherein sub-pixel of the corresponding predetermined number of each of the multiple second spacer, between described first
Parting is in net distribution, and around sub-pixel described in each of described bending region.
In the foldable OLED display panel of the application, the display panel is divided into non-bending region and bending region, curved
Spacer in the domain of folding area is net distribution, around sub-pixel (such as red, blue and green sub-pixels).By this netted
Spacer, can protect the sub-pixel surrounded, effectively avoid each non-uniform problem of sub-pixel stress distribution, enhance
The whole capability that sub-pixel in bending region meets with stresses in the process of bending, it is ensured that the reliability of display panel.
Detailed description of the invention
Figure 1A shows that a kind of existing folded shows the schematic diagram of product.
Figure 1B shows a kind of schematic diagram of existing three-bend display product.
Fig. 2 shows a kind of schematic diagram of existing foldable OLED display panel.
Fig. 3 shows a kind of schematic diagram of foldable OLED display panel according to the application first embodiment.
Fig. 4 shows a kind of schematic diagram of foldable OLED display panel according to the application second embodiment.
Specific embodiment
It is right as follows in conjunction with drawings and embodiments to keep the purpose, technical solution and effect of the application clearer, clear
The application is further described.It should be appreciated that specific embodiment described herein is only to explain that the application, the application are said
The word " embodiment " used in bright book means serving as example, example or illustration, is not used to limit the application.
Fig. 3 shows a kind of foldable Organic Light Emitting Diode (organic light according to the application first embodiment
Emitting diode, OLED) display panel schematic diagram.As shown in figure 3, the foldable OLED display panel includes non-curved
Folding area domain 10 and non-bending region 20.The display panel can be folded along non-bending region 20.The display panel folding
When folded, bending region 20 forms curved surface.When the display panel is not folded, bends region 20 and non-bending region 10 is plane.
The display panel can be folded display panel, three-bend display panel or other kinds of foldable OLED display panel.
The display panel includes multiple sub-pixels, red sub-pixel 201 as shown in Figure 3, blue subpixels 202 and
Green sub-pixels 203.Adjacent sub-pixel 201,202 and 203 separates within a predetermined distance each other.The sub-pixel of each color
It is uniformly distributed on a display panel.Sub-pixel 201,202 and 203 is both formed in bending region 20 and non-bending region 10.These
All or part of sub-pixel of sub-pixel 201,202 and 203 has spontaneous light characteristic.For example, each sub-pixel 201,202 and
203 all correspond to an OLED luminescent device.For another example, the corresponding OLED luminescent device of the sub-pixel of a certain color, other face
The sub-pixel of color is excited by the OLED luminescent device and is formed.
The display panel includes the first spacer 210, is set to bending region 20.First spacer 210 is to provide branch
It supports and gap is formed.Specifically, the first spacer 210 is to the support between providing film layer, so that forming gap between film layer.
For example, first spacer 210 may be provided at thin film transistor (TFT) (thin film transistor, TFT) array substrate and
Between color film (color filter, CF) substrate, for forming gap between tft array substrate and CF substrate.For another example, described
One spacer 210 may be provided between oled substrate and the thin-film packing structure for stopping water oxygen intrusion, in oled substrate and
Gap is formed between thin-film packing structure.
First spacer 210 may include photosensitive type spacer, and material is organic photoresist.For example, between described first
DL-1000 can be used in parting 210, and perhaps organic photoresist such as DL-1001C is made general photoetching process or half color can be used
(half-tone) technique is adjusted to be made.
As shown in figure 3, first spacer 210 being set in bending region 20 is in net distribution, and around described
Multiple sub-pixels 201,202 and 203.Specifically, as shown in figure 3, first spacer 210 is by the straight line line in net distribution
Section is constituted.In an embodiment, first spacer 210 is around each of the bending region 20 sub-pixel.Specifically
Ground, first spacer 210 is set between red sub-pixel 201 and blue subpixels 202, red sub-pixel 201 and green
Between sub-pixel 203 and between blue subpixels 202 and green sub-pixels 203.
Due to having the first spacer 210 to surround around bending 20 sub-pixel of region, the first spacer 210 is uniformly distributed,
Thickness is consistent with figure, can preferably disperse to avoid stress significantly from external or internal stress in folding process
It concentrates on leading to its failure on some sub-pixel.
The display panel may also include multiple second spacers 220 set on the non-bending region 10, the multiple
The sub-pixel of the corresponding predetermined number of each of second spacer 220, such as each second spacer 220 is small rectangular
(12*12um) is distributed second spacer 220, distribution density 0.35% in every 8 sub-pixels.Between the multiple second
Parting 220, to provide support and form gap, specifically to provide the support between film layer, so that being formed between film layer empty
Gap.The multiple second spacer 220 can be identical material with first spacer 210, be made under Yu Tongyi processing procedure.Example
Such as, the multiple second spacer 220 and first spacer 210 are all organic photoresist, are used under Yu Tongyi processing procedure general
Photoetching process or halftoning (half-tone) technique are made.The multiple second spacer 220 and first interval
It when object 210 makes simultaneously, does not need additionally to increase mask plate (mask), need to only change existing mask plate.
Fig. 4 shows a kind of schematic diagram of foldable OLED display panel according to the application second embodiment.The application
Two embodiments and first embodiment the difference is that, in the application second embodiment, the display panel includes the first spacer
310, first spacer 310 in the warpage molded line section of net distribution by constituting.Compared with first embodiment, the application second
The first spacer 310 being made of in embodiment the warpage molded line section in net distribution, can preferably buffer, discharge stress.
In the foldable OLED display panel of the application first embodiment and second embodiment, the display panel is divided into non-
Region and bending region are bent, bending the spacer in region is net distribution, around sub-pixel (such as red, blue and green
Sub-pixels).By this netted spacer, the sub-pixel surrounded can protect, each sub-pixel is effectively avoided to answer
Power distributes non-uniform problem, the whole capability that the sub-pixel in enhancing bending region meets with stresses in the process of bending, it is ensured that
The reliability of display panel.
Although above preferred embodiment is not to limit in conclusion the application is disclosed above with preferred embodiment
The application processed, those skilled in the art are not departing from scope of the present application, can make it is various change and retouch, because
The protection scope of this application subjects to the scope of the claims.
Claims (10)
1. a kind of foldable OLED display panel, the display panel includes bending region and non-bending region, the display surface
When plate folds, bending region formation curved surface, when the display panel is not folded, the bending region and the non-bent area
Domain is plane, which is characterized in that the display panel includes:
Multiple sub-pixels are formed in the bending region and the non-bending region, the whole of the multiple sub-pixel or portion
Molecule pixel has spontaneous light characteristic；And
First spacer, to provide support and form gap, first spacer is set to the bending region, and is in
Net distribution, around the multiple sub-pixel.
2. foldable OLED display panel according to claim 1, it is characterised in that: first spacer loops are around described
Bend each of region sub-pixel.
3. foldable OLED display panel according to claim 1, it is characterised in that: the multiple sub-pixel includes red
Sub-pixel, blue subpixels and green sub-pixels, first spacer are set to the red sub-pixel and the sub- picture of blue
Between element, between the red sub-pixel and the green sub-pixels and the blue subpixels and the green sub-pixels it
Between.
4. foldable OLED display panel according to claim 1, it is characterised in that: first spacer is by netted
The straight-line segment of distribution is constituted.
5. foldable OLED display panel according to claim 1, it is characterised in that: first spacer is by netted
The warpage molded line section of distribution is constituted.
6. foldable OLED display panel according to claim 1, which is characterized in that the display panel further include:
Multiple second spacers, to provide support and form gap, the multiple second spacer is set to described non-curved
Folding area domain, the sub-pixel of the corresponding predetermined number of each of the multiple second spacer.
7. foldable OLED display panel according to claim 6, it is characterised in that: first spacer and described more
The material of a second spacer is identical.
8. foldable OLED display panel according to claim 1, it is characterised in that: first spacer includes photosensitive
Type spacer.
9. foldable OLED display panel according to claim 8, it is characterised in that: the material of first spacer is
Organic photoresist.
10. a kind of foldable OLED display panel, the display panel includes bending region and non-bending region, the display surface
When plate folds, bending region formation curved surface, when the display panel is not folded, the bending region and the non-bent area
Domain is plane characterized by comprising
Multiple sub-pixels are formed in the bending region and the non-bending region, the whole of the multiple sub-pixel or portion
Molecule pixel has spontaneous light characteristic；
First spacer, to provide support and form gap, first spacer is set to the bending region；And
Multiple second spacers, to provide support and form gap, the multiple second spacer is set to described non-curved
Folding area domain,
The wherein sub-pixel of the corresponding predetermined number of each of the multiple second spacer, first spacer
In net distribution, and around sub-pixel described in each of described bending region.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811561838.2A CN109560116B (en) | 2018-12-20 | 2018-12-20 | Foldable OLED display panel |
| PCT/CN2019/082274 WO2020124886A1 (en) | 2018-12-20 | 2019-04-11 | Foldable oled display panel |
| US16/473,179 US11222927B2 (en) | 2018-12-20 | 2019-04-11 | Foldable OLED display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811561838.2A CN109560116B (en) | 2018-12-20 | 2018-12-20 | Foldable OLED display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109560116A true CN109560116A (en) | 2019-04-02 |
| CN109560116B CN109560116B (en) | 2020-10-27 |
Family
ID=65870591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811561838.2A Active CN109560116B (en) | 2018-12-20 | 2018-12-20 | Foldable OLED display panel |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US11222927B2 (en) |
| CN (1) | CN109560116B (en) |
| WO (1) | WO2020124886A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020124886A1 (en) * | 2018-12-20 | 2020-06-25 | 武汉华星光电半导体显示技术有限公司 | Foldable oled display panel |
| CN111863890A (en) * | 2020-07-07 | 2020-10-30 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN113517318A (en) * | 2021-04-06 | 2021-10-19 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| US11610948B2 (en) | 2020-07-07 | 2023-03-21 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | OLED with butterfly-shaped spacer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112368840B (en) * | 2020-09-10 | 2021-12-10 | 京东方科技集团股份有限公司 | Pixel array and display device |
| CN114203032A (en) * | 2021-11-11 | 2022-03-18 | 武汉华星光电半导体显示技术有限公司 | Metal supporting structure and folding display panel |
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| WO2020124886A1 (en) * | 2018-12-20 | 2020-06-25 | 武汉华星光电半导体显示技术有限公司 | Foldable oled display panel |
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| US11610948B2 (en) | 2020-07-07 | 2023-03-21 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | OLED with butterfly-shaped spacer |
| CN113517318A (en) * | 2021-04-06 | 2021-10-19 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN113517318B (en) * | 2021-04-06 | 2022-08-23 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020124886A1 (en) | 2020-06-25 |
| US11222927B2 (en) | 2022-01-11 |
| CN109560116B (en) | 2020-10-27 |
| US20210343800A1 (en) | 2021-11-04 |
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